Craig Mayer, Nick WIlliams, Vojtech Huser
Lister Hill National Center for Biomedical Communications, National Library of Medicine, NIH, Bethesda, MD

See the full regCTG repository at https://github.com/lhncbc/CRI/tree/master/regCTG

To return to the list of conditions and view other reports go to https://lhncbc.github.io/CRI/regCTG/regCTG-condition_report_links.html


Study Counts

Type Study_count
Total_Studies 4213
interventional 3658
Observational 498
Registry 57

Studies over Time

```

Interventional Trials

Intervention Type

intervention_type Study_Count
Drug 2056
Biological 228
Drug|Other 158
Procedure 132
Other 115
Device 96
Biological|Drug 95
Behavioral 76
Drug|Procedure 63
Drug|placebo 57
Radiation 51
Drug|Radiation 42
Other|Procedure 34
Biological|Drug|Other 32
Biological|Other 29
Drug|Procedure|Radiation 27
Biological|Drug|Procedure 22
Behavioral|Other 21
Drug|Other|Procedure 20
Device|Procedure 19
Device|Drug 17
Genetic 15
Dietary Supplement 14
Other|Radiation 14
Procedure|Radiation 14
Drug|Other|placebo 10
Drug|Other|Procedure|Radiation 10
Combination Product 9
Behavioral|Drug 8
Biological|Drug|Procedure|Radiation 8
Device|Drug|Procedure 8
Diagnostic Test 8
Dietary Supplement|Drug 8
Behavioral|Other|Procedure 7
Biological|Drug|Radiation 6
Biological|Other|Procedure 6
Device|Other 6
Drug|Genetic|Other 6
Other|Procedure|Radiation 6
Biological|Drug|Other|Procedure|Radiation 5
Biological|Procedure 4
Combination Product|Drug 4
Device|Other|Procedure 4
Drug|Genetic|Other|Procedure 4
Behavioral|Device 3
Biological|Drug|Other|Procedure 3
Biological|placebo 3
Device|Procedure|Radiation 3
Device|Radiation 3
Drug|Genetic 3
Drug|Other|placebo|Procedure 3
Behavioral|Drug|Other 2
Behavioral|Drug|placebo 2
Behavioral|Radiation 2
Biological|Device 2
Biological|Device|Drug|Procedure 2
Biological|Drug|placebo 2
Biological|Other|Radiation 2
Device|Drug|Radiation 2
Dietary Supplement|placebo 2
Drug|Other|Radiation 2
Drug|placebo|Procedure 2
Behavioral|Device|Drug|placebo 1
Behavioral|Device|Other 1
Behavioral|Device|Procedure 1
Behavioral|Dietary Supplement|Other|Procedure 1
Behavioral|Drug|Other|placebo 1
Behavioral|Drug|Procedure 1
Behavioral|placebo 1
Behavioral|Procedure 1
Behavioral|Procedure|Radiation 1
Biological|Combination Product 1
Biological|Combination Product|Drug|Other 1
Biological|Device|Drug 1
Biological|Device|Drug|Other 1
Biological|Device|Other 1
Biological|Device|placebo 1
Biological|Device|Procedure 1
Biological|Dietary Supplement|Drug|Other|placebo|Procedure 1
Biological|Genetic|Other 1
Biological|Genetic|Other|Procedure 1
Biological|Other|placebo 1
Biological|Other|Procedure|Radiation 1
Biological|placebo|Procedure 1
Biological|Radiation 1
Combination Product|Other|Procedure 1
Combination Product|Procedure 1
Device|Drug|Genetic|Procedure 1
Device|Drug|Other 1
Device|Other|Procedure|Radiation 1
Device|placebo 1
Diagnostic Test|Drug|Other 1
Diagnostic Test|Drug|Procedure 1
Diagnostic Test|Drug|Procedure|Radiation 1
Diagnostic Test|Other 1
Dietary Supplement|Drug|Other 1
Dietary Supplement|Other 1
Dietary Supplement|Other|placebo 1
Dietary Supplement|Other|Procedure 1
Drug|Genetic|Other|Procedure|Radiation 1
Drug|Genetic|Radiation 1
Other|placebo 1
placebo|Procedure 1

Count of Studies by Intervention (normalized and mapped)

Interventions over Time

Weekly studies for each intervention

Studies by Country

Country Study_Count
United States 1896
China 257
NA 127
Japan 115
France 83
United States|Canada 72
Canada 65
Korea, Republic of 62
United Kingdom 51
Germany 43
Netherlands 43
Australia 38
Italy 35
Taiwan 24
Denmark 23
Spain 17
United States|Australia 17
United States|United Kingdom 17
Switzerland 15
United States|Puerto Rico 15
Belgium 14
Brazil 14
Austria 12
United States|Spain 11
Russian Federation 10
United States|Australia|Canada 10
United States|France 10
Israel 9
Sweden 9
India 8
Hong Kong 7
United States|Italy 7
United States|Canada|Puerto Rico 6
United States|Japan 6
Cuba 5
Egypt 5
Norway 5
United States|Germany 5
United States|Taiwan 5
Belgium|France 4
Belgium|Netherlands 4
Japan|Korea, Republic of|Taiwan 4
Netherlands|United Kingdom 4
Singapore 4
United States|China 4
United States|France|Netherlands 4
United States|France|United Kingdom 4
United States|Netherlands 4
Australia|China 3
Australia|Korea, Republic of 3
Austria|Belgium|Denmark|France|Germany|Netherlands|Norway|Switzerland|United Kingdom 3
Czechia 3
Finland 3
France|Spain 3
Hungary 3
Ireland 3
Japan|Korea, Republic of 3
Mexico 3
United States|Australia|Canada|New Zealand|Puerto Rico 3
United States|Australia|Canada|Puerto Rico 3
United States|Australia|Korea, Republic of 3
United States|Belgium 3
United States|Brazil 3
United States|Germany|Italy 3
United States|Korea, Republic of 3
United States|New Zealand 3
United States|Singapore 3
United States|Spain|United Kingdom 3
Argentina 2
Australia|Canada|Korea, Republic of 2
Austria|Belgium|Denmark|France|Germany|Greece|Israel|Italy|Netherlands|Norway|Portugal|Spain|Switzerland|United Kingdom 2
Belgium|Denmark|Netherlands|United Kingdom 2
France|Germany 2
France|United Kingdom 2
Germany|Norway 2
Greece 2
Iran, Islamic Republic of 2
Ireland|Sweden 2
Italy|Switzerland 2
Kenya 2
Poland 2
Saudi Arabia 2
Spain|United Kingdom 2
Thailand 2
Turkey 2
United States|Australia|Canada|Netherlands|Puerto Rico|Switzerland 2
United States|Belgium|France|Spain 2
United States|Canada|Denmark 2
United States|Canada|Denmark|France|Italy|Netherlands|Spain 2
United States|Canada|Korea, Republic of 2
United States|France|Germany 2
United States|France|Italy|Spain 2
United States|France|Spain|United Kingdom 2
United States|Italy|United Kingdom 2
United States|Netherlands|Switzerland|United Kingdom 2
Vietnam 2
Australia|Belgium|Canada|Denmark|Spain 1
Australia|Belgium|France|Netherlands 1
Australia|Bulgaria|Germany|Hungary|India|Israel|Italy|Lithuania|Poland|Romania|Spain|Taiwan|United Kingdom 1
Australia|Canada 1
Australia|Canada|France|Korea, Republic of|Netherlands 1
Australia|Germany|Italy|Korea, Republic of|Russian Federation|Spain|United Kingdom 1
Australia|Hong Kong|Japan|Korea, Republic of|Taiwan 1
Australia|New Zealand 1
Australia|New Zealand|Spain 1
Austria|Belgium|Czechia|Germany|Italy|Korea, Republic of 1
Austria|Belgium|Denmark|Germany|Lithuania|Netherlands|Norway|Spain|Sweden 1
Austria|Bosnia and Herzegovina|Croatia|Germany|India|Italy|Latvia|Poland|Romania|Russian Federation|Serbia|Sweden|Ukraine 1
Austria|France|Netherlands|United Kingdom 1
Austria|Germany|Italy|Korea, Republic of|Netherlands|Spain|Sweden|Switzerland|Thailand 1
Belgium|Brazil|Bulgaria|Canada|Czech Republic|France|Hungary|Italy|Panama|Peru|Spain|Sweden|Switzerland|United Kingdom 1
Belgium|Canada|Croatia|Germany|Portugal|United Kingdom 1
Belgium|Canada|Denmark|Netherlands|Poland|Spain 1
Belgium|Canada|Denmark|Spain 1
Belgium|Canada|Germany|United Kingdom 1
Belgium|Denmark|France|Germany|Hong Kong|Israel|Italy|Korea, Republic of|Portugal|South Africa|Spain|Sweden|Switzerland|Taiwan|Ukraine|United Kingdom 1
Belgium|Denmark|France|Germany|Ireland|Italy|Netherlands|Poland|Spain|United Kingdom 1
Belgium|Denmark|France|Netherlands|United Kingdom 1
Belgium|Estonia|France|Germany|Israel|Italy|Korea, Republic of|Netherlands|Norway|Portugal|Spain|Switzerland|United Kingdom 1
Belgium|Finland|Israel|Netherlands|Portugal|Spain|Switzerland|Turkey 1
Belgium|France|Germany|India|Italy|Netherlands 1
Belgium|France|Italy|Poland|Sweden 1
Belgium|France|Netherlands 1
Belgium|France|Spain 1
Belgium|Germany|Poland|Russian Federation|Spain 1
Belgium|Italy|Netherlands|Spain|United Kingdom 1
Belgium|Netherlands|United Kingdom 1
Belgium|Spain 1
Bosnia and Herzegovina|Croatia|Korea, Republic of|Spain|Taiwan|United Kingdom 1
Brazil|Canada 1
Brazil|Canada|Cyprus|United Kingdom 1
Canada|Denmark 1
Canada|Denmark|France|Germany|Netherlands|Norway|Spain 1
Canada|France|Spain 1
Canada|India 1
Canada|United Kingdom 1
China|Colombia|El Salvador 1
China|Poland|Sweden 1
China|Singapore|Taiwan 1
Colombia 1
Colombia|Germany|Honduras|Panama|Taiwan 1
Costa Rica 1
Czech Republic 1
Czechia|France|Korea, Republic of|Netherlands|United Kingdom 1
Denmark|Finland|France|Germany|Norway|Sweden 1
Denmark|Finland|France|Italy|Spain|United Kingdom 1
Denmark|France|Germany|Israel|Korea, Republic of|Spain|United Kingdom 1
Denmark|France|Germany|Italy|Netherlands|Spain|United Kingdom 1
Denmark|France|Spain 1
Denmark|Greece|Norway|Sweden 1
Denmark|Norway|Sweden 1
Denmark|Spain 1
Finland|Germany|Italy|Netherlands 1
Finland|Germany|Poland|Sweden 1
France|Germany|Italy|Netherlands|Poland|Spain|Sweden|United Kingdom 1
France|Germany|Spain|United Kingdom 1
France|Germany|Switzerland 1
France|Guadeloupe|Martinique|Réunion 1
France|Ireland|Israel|Italy|Spain 1
France|Italy|Japan|Latvia|Russian Federation|Serbia|South Africa|Spain 1
France|Italy|Netherlands|Spain 1
France|Italy|Spain 1
France|Italy|Spain|United Kingdom 1
France|Italy|Switzerland 1
France|Italy|United Kingdom 1
France|Korea, Republic of|Spain 1
France|Netherlands 1
France|Netherlands|United Kingdom 1
France|United States|Australia|Austria|Belgium|Canada|Germany|Netherlands 1
France|United States|Belgium|China|Germany|Hong Kong|Italy|Korea, Republic of|Netherlands|Singapore|Spain|Taiwan|United Kingdom 1
France|United States|Canada|Germany|Israel|Korea, Republic of|Netherlands|Spain|United Kingdom 1
France|United States|Germany|Italy|Spain|United Kingdom 1
Germany|Greece|Israel|Italy|United Kingdom 1
Germany|Hungary 1
Germany|Italy 1
Germany|Italy|Spain|Sweden 1
Germany|Italy|United Kingdom 1
Germany|Netherlands|Sweden 1
Germany|Netherlands|Switzerland|United Kingdom 1
Germany|Netherlands|United Kingdom 1
Germany|Russian Federation 1
Hong Kong|Korea, Republic of|Malaysia|Philippines|Singapore|Taiwan|Thailand 1
Hungary|Moldova, Republic of|Poland|Russian Federation 1
Ireland|United Kingdom 1
Italy|Poland|United Kingdom 1
Italy|United States|Australia|Canada|Denmark|France|Germany|Hungary|Netherlands|Poland|Spain|United Kingdom 1
Japan|Australia|Korea, Republic of 1
Japan|Spain 1
Japan|Taiwan 1
Japan|United Kingdom 1
Japan|United States|Korea, Republic of|Taiwan 1
Jordan 1
Korea, Republic of|United States|Denmark|Hong Kong|Spain|Taiwan 1
Netherlands|Spain|Switzerland 1
Netherlands|Spain|United States|France|Germany|Italy|Japan|Korea, Republic of 1
Netherlands|Sweden|United Kingdom 1
Netherlands|Switzerland 1
New Zealand 1
Palestinian Territory, occupied 1
Portugal 1
Puerto Rico|United States|Belgium|Bulgaria|Czechia|Germany|Hungary|Latvia|Lithuania|Poland|Romania|United Kingdom 1
Slovakia 1
South Africa 1
Switzerland|Austria|Belgium|Denmark|France|Germany|Greece|Israel|Italy|Netherlands|Norway|Portugal|Spain|United Kingdom 1
Switzerland|United Kingdom 1
Trinidad and Tobago 1
United States|Argentina|Australia|Austria|Belgium|Brazil|Canada|Denmark|Finland|France|Germany|Greece|Israel|Italy|Mexico|Netherlands|Poland|Portugal|Puerto Rico|Russian Federation|Spain|Turkey|United Kingdom 1
United States|Argentina|Australia|Austria|Belgium|Brazil|Canada|France|Germany|Greece|Guadeloupe|Hungary|Israel|Italy|Russian Federation|Réunion|South Africa|Spain|Switzerland|Uruguay 1
United States|Argentina|Australia|Austria|Belgium|Brazil|Chile|Czech Republic|Denmark|Estonia|France|Germany|Greece|Italy|Korea, Republic of|Netherlands|New Zealand|Norway|Poland|Puerto Rico|Romania|Russian Federation|South Africa|Spain|Sweden|Turkey|Ukraine|United Kingdom 1
United States|Argentina|Australia|Austria|Belgium|Colombia|France|Germany|Greece|Italy|Netherlands|Peru|Portugal|Spain|Sweden|Taiwan|United Kingdom|Venezuela 1
United States|Argentina|Australia|Belgium|Brazil|Canada|Chile|Croatia|Czech Republic|Denmark|Estonia|France|Germany|Hong Kong|Hungary|Israel|Italy|Korea, Republic of|Netherlands|Poland|Portugal|Russian Federation|Singapore|South Africa|Spain|Sweden|Switzerland|Taiwan|Turkey|Ukraine|United Kingdom 1
United States|Argentina|Australia|Belgium|Brazil|Canada|Chile|Denmark|France|Germany|Italy|Netherlands|Peru|Poland|Puerto Rico|Romania|Singapore|Spain|United Kingdom 1
United States|Argentina|Australia|Belgium|Brazil|China|France|Germany|Italy|Japan|Korea, Republic of|Poland|Spain|Taiwan|United Kingdom 1
United States|Argentina|Belgium|Brazil|Bulgaria|Canada|China|France|Germany|Greece|Hungary|India|Israel|Italy|Japan|Korea, Republic of|Malaysia|Mexico|Netherlands|Peru|Poland|Portugal|Romania|Russian Federation|Spain|Switzerland|Taiwan|Thailand|Turkey 1
United States|Argentina|Belgium|Brazil|Canada|Chile|Czech Republic|Denmark|Finland|France|Germany|Hungary|India|Italy|Korea, Republic of|Mexico|Netherlands|Russian Federation|Singapore|Slovakia|South Africa|Spain|Sweden|Taiwan|Turkey|United Kingdom 1
United States|Argentina|Belgium|Brazil|Chile|Finland|France|Greece|Israel|Italy|Mexico|Peru|Russian Federation|Spain|Turkey|Ukraine|United Kingdom 1
United States|Argentina|Estonia 1
United States|Australia|Austria|Belgium|Brazil|Canada|France|Germany|Hong Kong|Italy|New Zealand|Portugal|Slovakia|Spain|Sweden|Switzerland|Taiwan|United Kingdom 1
United States|Australia|Austria|Belgium|Brazil|Canada|France|Germany|Japan|Korea, Republic of|Switzerland 1
United States|Australia|Austria|Belgium|Canada|China|France|Germany|Italy|Japan|Netherlands|Poland|Russian Federation|Spain|Sweden|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|Czechia|Denmark|Finland|France|Germany|Greece|Italy|Netherlands|Norway|Poland|Portugal|Russian Federation|Slovakia|Spain|Sweden|Ukraine|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|Czechia|Denmark|Finland|France|Germany|Hong Kong|Hungary|Ireland|Italy|Korea, Republic of|Netherlands|Portugal|Singapore|Spain|Taiwan|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|Finland|France|Japan|Spain|Taiwan 1
United States|Australia|Austria|Brazil|Bulgaria|Croatia|Czechia|Denmark|Finland|France|Greece|Korea, Republic of|Netherlands|Norway|Philippines|Poland|Romania|Russian Federation|Singapore|Spain|Taiwan|Ukraine|United Kingdom 1
United States|Australia|Austria|Bulgaria|Canada|Czechia|France|Germany|Greece|Hong Kong|Hungary|Ireland|Italy|Japan|Korea, Republic of|Lithuania|Malaysia|New Zealand|Poland|Portugal|Russian Federation|Singapore|Slovakia|Spain|Switzerland|Taiwan|Turkey|Ukraine|United Kingdom 1
United States|Australia|Austria|Canada|France|Germany|Italy|Netherlands|Poland|Spain|Sweden|United Kingdom 1
United States|Australia|Austria|Canada|France|Germany|Italy|Spain|Sweden 1
United States|Australia|Austria|Canada|France|Greece|Indonesia|Italy|Korea, Republic of|Philippines|Singapore|Spain|Sweden|Switzerland|Thailand 1
United States|Australia|Austria|France|Germany|Israel|Italy|Korea, Republic of|Netherlands|Singapore|Spain|Taiwan|Thailand|Turkey 1
United States|Australia|Belgium 1
United States|Australia|Belgium|Brazil|Bulgaria|China|Colombia|Czechia|France|Germany|Hong Kong|Italy|Japan|Korea, Republic of|Lebanon|Malaysia|Poland|Russian Federation|Singapore|Spain|Taiwan 1
United States|Australia|Belgium|Brazil|Canada|Czechia|France|Germany|Hungary|Italy|Netherlands|New Zealand|Portugal|Slovakia|Spain|Sweden|Switzerland|Taiwan|United Kingdom 1
United States|Australia|Belgium|Brazil|China|Denmark|France|Germany|Hungary|Ireland|Italy|Japan|Korea, Republic of|Portugal|Russian Federation|Singapore|Slovakia|Spain|Taiwan|United Kingdom 1
United States|Australia|Belgium|Bulgaria|Finland|France|Germany|Italy|New Zealand|Poland|Spain|Ukraine|United Kingdom 1
United States|Australia|Belgium|Canada|Denmark|Hungary|Korea, Republic of|Russian Federation|United Kingdom 1
United States|Australia|Belgium|Canada|Estonia|France|Netherlands|Spain|United Kingdom 1
United States|Australia|Belgium|Canada|France|Germany|Hong Kong|Italy|Japan|Singapore|Spain|Taiwan 1
United States|Australia|Belgium|Canada|France|Germany|Italy|Japan|Korea, Republic of|Spain|Taiwan|United Kingdom 1
United States|Australia|Belgium|Canada|France|Germany|Italy|Korea, Republic of|Netherlands|Singapore|Spain|Switzerland 1
United States|Australia|Belgium|Canada|France|Germany|Italy|Taiwan|United Kingdom 1
United States|Australia|Belgium|Canada|France|Hungary|Italy|Korea, Republic of|New Zealand|Spain|United Kingdom 1
United States|Australia|Belgium|Canada|France|Italy|Singapore|Spain|Switzerland 1
United States|Australia|Belgium|Canada|Germany|Netherlands|Singapore|Spain 1
United States|Australia|Belgium|Canada|Japan|Poland|United Kingdom 1
United States|Australia|Belgium|China|France|Germany|Hong Kong|Italy|Japan|Korea, Republic of|Netherlands|Poland|Singapore|Spain|Taiwan|United Kingdom 1
United States|Australia|Belgium|Denmark|France|Germany|Ireland|Italy|Netherlands|Spain|Switzerland|United Kingdom 1
United States|Australia|Belgium|France 1
United States|Australia|Belgium|France|Korea, Republic of 1
United States|Australia|Belgium|France|Netherlands|Spain 1
United States|Australia|Belgium|Italy|Spain 1
United States|Australia|Brazil|France|Germany|Israel|Italy|Korea, Republic of|New Zealand|Sweden|United Kingdom 1
United States|Australia|Bulgaria|Poland|Spain|Thailand|Ukraine 1
United States|Australia|Canada|China|Denmark|France|Germany|Ireland|Israel|Italy|Japan|Korea, Republic of|Netherlands|Poland|Spain|Sweden|Switzerland|United Kingdom 1
United States|Australia|Canada|Denmark|France|Germany|Italy|Netherlands|United Kingdom 1
United States|Australia|Canada|Estonia|Georgia|India|Korea, Republic of|Puerto Rico|South Africa 1
United States|Australia|Canada|France|Germany|Hong Kong|Israel|Italy|Korea, Republic of|Netherlands|Norway|Singapore|Spain|Taiwan|Thailand 1
United States|Australia|Canada|France|Germany|Italy|Japan|Spain|Switzerland 1
United States|Australia|Canada|France|Germany|Italy|Korea, Republic of|Netherlands|Spain|United Kingdom 1
United States|Australia|Canada|France|Germany|Netherlands|Switzerland|United Kingdom 1
United States|Australia|Canada|France|Israel|Japan|Korea, Republic of|Spain|Taiwan 1
United States|Australia|Canada|France|Japan|Korea, Republic of|Spain 1
United States|Australia|Canada|France|Japan|Poland|Taiwan|United Kingdom 1
United States|Australia|Canada|France|Netherlands|United Kingdom 1
United States|Australia|Canada|France|Spain 1
United States|Australia|Canada|Germany|Korea, Republic of|Singapore 1
United States|Australia|Canada|Hong Kong|Italy|Korea, Republic of|Netherlands|Poland|Singapore|Spain|United Kingdom 1
United States|Australia|Canada|Israel|New Zealand|Puerto Rico 1
United States|Australia|Canada|Japan|New Zealand|Puerto Rico|Saudi Arabia 1
United States|Australia|Canada|Netherlands|New Zealand|Switzerland 1
United States|Australia|Canada|New Zealand 1
United States|Australia|Canada|New Zealand|Switzerland 1
United States|Australia|Canada|Switzerland 1
United States|Australia|Chile|France|Israel|Japan|Korea, Republic of|New Zealand|Poland|Spain 1
United States|Australia|China|Israel|New Zealand|Poland|Russian Federation|South Africa|Switzerland|United Kingdom 1
United States|Australia|China|Japan|Korea, Republic of|New Zealand|Taiwan 1
United States|Australia|China|New Zealand|Taiwan 1
United States|Australia|France|Hong Kong|Japan|Korea, Republic of|Netherlands|Spain|Taiwan|United Kingdom 1
United States|Australia|France|Hong Kong|Malta|Poland|Russian Federation|Ukraine 1
United States|Australia|France|Italy|Korea, Republic of|Netherlands|Portugal|Spain|Taiwan 1
United States|Australia|France|Italy|Spain|Switzerland|United Kingdom 1
United States|Australia|France|Korea, Republic of|Spain|United Kingdom 1
United States|Australia|France|New Zealand|Spain|United Kingdom 1
United States|Australia|France|Taiwan 1
United States|Australia|Germany 1
United States|Australia|Hong Kong|Korea, Republic of|Taiwan|Thailand 1
United States|Australia|Ireland|Korea, Republic of|United Kingdom 1
United States|Australia|Israel|Korea, Republic of 1
United States|Australia|Italy|Korea, Republic of|New Zealand|United Kingdom 1
United States|Australia|Korea, Republic of|Netherlands|Spain 1
United States|Australia|Netherlands 1
United States|Australia|Peru|Puerto Rico 1
United States|Australia|Singapore 1
United States|Australia|Spain 1
United States|Australia|Spain|United Kingdom 1
United States|Australia|United Kingdom 1
United States|Austria|Belgium|Czechia|Greece|Italy|Spain|United Kingdom 1
United States|Austria|Belgium|Denmark|Italy|Japan|Spain 1
United States|Austria|Canada|France|Germany|Italy|Japan|Spain|Switzerland|United Kingdom 1
United States|Austria|Denmark|Germany|Netherlands|Spain|Sweden|United Kingdom 1
United States|Belarus|Belgium|Bosnia and Herzegovina|Brazil|Canada|Croatia|Cyprus|Egypt|France|Germany|Greece|Hungary|Israel|Italy|Korea, Republic of|Netherlands|New Zealand|Portugal|Romania|Russian Federation|Serbia|South Africa|Spain|United Kingdom 1
United States|Belgium|Bulgaria|Croatia|North Macedonia|Serbia|Slovakia|Slovenia 1
United States|Belgium|Canada|Czech Republic|Finland|France|Germany|Greece|Israel|Slovakia|Switzerland|Turkey|United Kingdom 1
United States|Belgium|Canada|Czechia|France|Greece|Italy|Netherlands|Spain|Taiwan 1
United States|Belgium|Canada|Denmark|Italy|Netherlands|Spain 1
United States|Belgium|Canada|France|Italy|Spain|Switzerland 1
United States|Belgium|Canada|France|Korea, Republic of|Spain|Taiwan 1
United States|Belgium|Canada|Italy|Spain 1
United States|Belgium|Canada|Spain 1
United States|Belgium|Canada|Spain|Switzerland 1
United States|Belgium|China|France|India|Mexico|Russian Federation 1
United States|Belgium|Czechia|France|Germany|Korea, Republic of|Poland|Taiwan|United Kingdom 1
United States|Belgium|Czechia|Israel 1
United States|Belgium|Denmark|Netherlands|Russian Federation|Spain|United Kingdom 1
United States|Belgium|Denmark|Netherlands|Sweden 1
United States|Belgium|Finland|France|Italy|Japan|Korea, Republic of|Taiwan 1
United States|Belgium|Finland|France|Puerto Rico|Spain 1
United States|Belgium|France|Germany|Italy|Korea, Republic of|Netherlands|Poland|Spain|United Kingdom 1
United States|Belgium|France|Germany|Italy|Portugal|Spain|United Kingdom 1
United States|Belgium|France|Germany|Italy|Spain 1
United States|Belgium|France|Germany|Italy|Spain|Sweden|Switzerland|United Kingdom 1
United States|Belgium|France|Hong Kong|Korea, Republic of|Spain|Taiwan 1
United States|Belgium|France|Japan|Spain|United Kingdom 1
United States|Belgium|France|Korea, Republic of|Spain|United Kingdom 1
United States|Belgium|France|Spain|United Kingdom 1
United States|Belgium|Germany|Hungary|Korea, Republic of|United Kingdom 1
United States|Belgium|Germany|Korea, Republic of|Singapore|Spain 1
United States|Belgium|Italy|Japan|Korea, Republic of|Spain 1
United States|Belgium|Netherlands 1
United States|Belgium|Netherlands|Spain|United Kingdom 1
United States|Belgium|Spain|United Kingdom 1
United States|Brazil|France|Israel|Italy|Netherlands|Portugal|Singapore|Spain|United Kingdom 1
United States|Brazil|France|Italy|Korea, Republic of|Russian Federation|Ukraine 1
United States|Bulgaria|Czechia|Germany|Hungary|Mexico|Poland|Puerto Rico|Romania|United Kingdom 1
United States|Bulgaria|Denmark|France|Italy|Spain|United Kingdom 1
United States|Canada|China|France|Germany|Hong Kong|Italy|Taiwan 1
United States|Canada|Czechia|France|Hungary|Slovakia|Spain 1
United States|Canada|Denmark|Finland|Germany|Italy|Spain|United Kingdom 1
United States|Canada|Denmark|France|Italy|Japan|Netherlands|Singapore|Spain|United Kingdom 1
United States|Canada|Denmark|France|Netherlands|Spain 1
United States|Canada|Denmark|Netherlands|Spain|Switzerland 1
United States|Canada|Finland|France|Germany|Italy|Korea, Republic of|Spain 1
United States|Canada|France 1
United States|Canada|France|Germany|Israel|Italy|Spain|United Kingdom 1
United States|Canada|France|Germany|Italy|Korea, Republic of|Netherlands|United Kingdom 1
United States|Canada|France|Germany|Italy|Poland|Spain 1
United States|Canada|France|Italy|Poland 1
United States|Canada|France|Italy|Spain|Switzerland 1
United States|Canada|France|Italy|Spain|Switzerland|United Kingdom 1
United States|Canada|France|Korea, Republic of|Spain 1
United States|Canada|France|Netherlands 1
United States|Canada|France|Spain 1
United States|Canada|Germany|Netherlands|Singapore|Spain|Switzerland 1
United States|Canada|Israel 1
United States|Canada|Italy|Japan|Korea, Republic of|Netherlands|Singapore|Switzerland|Taiwan 1
United States|Canada|Italy|Japan|Korea, Republic of|Portugal|Spain|Taiwan|United Kingdom 1
United States|Canada|Italy|Spain 1
United States|Canada|Italy|United Kingdom 1
United States|Canada|Japan|Taiwan 1
United States|Canada|Korea, Republic of|Poland|Taiwan|United Kingdom 1
United States|Canada|Korea, Republic of|Taiwan 1
United States|Canada|Netherlands 1
United States|Canada|Netherlands|Poland|Spain 1
United States|Canada|Netherlands|Russian Federation 1
United States|Canada|Netherlands|Slovakia|United Kingdom 1
United States|Canada|Norway|Spain|Switzerland 1
United States|Canada|Russian Federation|Ukraine 1
United States|Canada|Singapore 1
United States|Canada|Spain|Switzerland 1
United States|Canada|Switzerland 1
United States|China|Italy|Japan|Korea, Republic of|Russian Federation|Taiwan 1
United States|Cyprus 1
United States|Czechia|Italy|Korea, Republic of|Netherlands|Russian Federation|Spain|Thailand|Turkey 1
United States|Denmark|Finland|France|Japan|Korea, Republic of|Spain 1
United States|Denmark|France|Germany|Spain|United Kingdom 1
United States|Denmark|France|Italy|Japan|Korea, Republic of|Spain|Switzerland|United Kingdom 1
United States|Denmark|Germany 1
United States|Denmark|Germany|Japan 1
United States|Denmark|Italy|Spain 1
United States|Denmark|Netherlands|Switzerland 1
United States|Denmark|United Kingdom 1
United States|France|Germany|Hong Kong|Hungary|Italy|Netherlands|Spain|United Kingdom 1
United States|France|Germany|Italy|Netherlands|United Kingdom 1
United States|France|Germany|Italy|Norway|United Kingdom 1
United States|France|Germany|Japan|Netherlands|Singapore|Spain|Taiwan 1
United States|France|Germany|Singapore|Switzerland 1
United States|France|Germany|Spain 1
United States|France|Israel|Spain|Taiwan 1
United States|France|Italy 1
United States|France|Italy|Netherlands|Spain|Switzerland 1
United States|France|Italy|United Kingdom 1
United States|France|Japan|Netherlands 1
United States|France|Japan|Puerto Rico|Spain|Taiwan 1
United States|France|Korea, Republic of|Spain 1
United States|France|Korea, Republic of|Spain|United Kingdom 1
United States|France|Netherlands|Spain 1
United States|France|Netherlands|United Kingdom 1
United States|France|Singapore|Spain|Taiwan 1
United States|France|Slovakia 1
United States|France|Spain 1
United States|France|Spain|Switzerland 1
United States|Germany|Netherlands 1
United States|Germany|Netherlands|Spain|United Kingdom 1
United States|Germany|New Zealand 1
United States|Germany|Spain|United Kingdom 1
United States|Germany|United Kingdom 1
United States|Hungary|Israel|Italy|Spain 1
United States|India 1
United States|Israel 1
United States|Israel|Italy|Japan|Singapore|Spain|Taiwan 1
United States|Israel|Netherlands|Spain 1
United States|Israel|United Kingdom 1
United States|Italy|Japan|Korea, Republic of 1
United States|Italy|Korea, Republic of 1
United States|Italy|Korea, Republic of|Spain 1
United States|Italy|Netherlands|Singapore|Spain 1
United States|Italy|Puerto Rico 1
United States|Italy|Spain 1
United States|Italy|Spain|United Kingdom 1
United States|Japan|Korea, Republic of|Spain 1
United States|Japan|Netherlands|Spain 1
United States|Netherlands|New Zealand|Australia|Canada|Puerto Rico|Switzerland 1
United States|Netherlands|Spain|United Kingdom 1
United States|Netherlands|Sweden|Switzerland|United Kingdom 1
United States|Netherlands|United Kingdom 1
United States|Norway 1
United States|Norway|Spain 1
United States|Poland|Spain 1
United States|Puerto Rico|Saudi Arabia 1
United States|Switzerland 1

Sites per Study

Site_count Study_Count
1 1882
2 365
3 283
4 153
5 124
6 92
7 60
8 68
9 47
10 46
11 42
12 44
13 23
14 22
15 31
16 19
17 16
18 17
19 12
20 19
21 17
22 15
23 11
24 14
25 6
26 6
27 13
28 7
29 7
30 7
31 4
32 4
33 6
34 5
35 3
36 2
37 4
38 3
39 7
40 3
41 2
42 1
43 6
44 1
47 3
49 5
50 1
51 1
52 2
53 2
54 1
55 3
56 3
57 3
58 2
59 5
61 3
62 1
63 1
64 1
65 2
66 2
68 1
69 1
71 1
72 2
74 1
75 2
76 2
80 1
81 1
82 1
83 1
86 1
87 1
88 1
90 1
92 1
94 2
95 1
96 1
97 1
98 2
103 2
105 3
106 2
107 2
109 3
110 2
111 2
112 2
113 1
114 1
115 2
118 2
130 1
131 1
137 1
142 1
143 1
145 1
153 1
159 1
160 1
163 1
165 1
167 1
169 1
177 2
179 1
187 1
188 1
196 1
204 1
220 1
221 1
223 1
226 1
251 1
262 1
281 1
302 1
309 1
317 1
319 1
326 1
330 1
366 1
371 1
382 1
394 1
405 1
434 1
472 1
499 1
504 1
508 1
516 1
559 1
721 1
937 1
1328 1

Phase

Phase Study_Count
Phase 1 1815
Phase 2 650
N/A 536
Phase 1/Phase 2 356
Phase 3 167
Phase 4 52
Early Phase 1 44
Phase 2/Phase 3 38

Number of Arms

Number_of_Arms Count_of_Studies
1 1849
2 851
3 242
4 143
5 62
6 37
7 31
8 12
9 18
10 8
11 4
12 9
13 2
14 2
16 1
17 1
18 1
19 1
27 1
28 1
37 1
NA 381

Number of Updates

Count of Versions Count of Studies
1 183
2 246
3 308
4 260
5 210
6 220
7 201
8 183
9 142
10 156
11 139
12 122
13 98
14 101
15 84
16 87
17 67
18 64
19 43
20 51
21 42
22 27
23 33
24 41
25 28
26 29
27 15
28 33
29 21
30 31
31 15
32 16
33 21
34 12
35 15
36 18
37 9
38 7
39 8
40 4
41 6
42 7
43 8
44 6
45 8
46 13
47 9
48 7
49 8
50 3
51 5
52 7
53 7
54 2
55 4
56 4
57 4
58 1
59 4
60 2
61 3
62 1
63 7
64 7
65 1
66 3
67 6
68 1
69 4
70 6
71 4
72 2
73 1
74 5
77 1
78 1
79 3
80 5
81 2
82 3
84 2
85 5
86 2
88 3
90 1
91 1
93 1
94 3
96 2
97 1
98 3
99 1
100 2
102 2
103 1
106 1
108 2
109 1
111 1
112 1
115 1
116 1
118 1
119 1
124 1
125 1
128 1
132 1
134 1
138 1
139 1
141 1
143 1
149 1
154 1
156 1
157 1
159 1
170 1
173 1
182 1
185 1
186 1
206 1
208 1
209 1
211 1
213 1
214 1
215 1
216 1
217 2
219 1
224 1
231 1
234 1
240 1
242 1
250 1
270 1
333 1
412 1
415 1
489 1
500 1
513 1
553 1
565 1
572 1
879 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 57507 3475 16.548777
Contacts/Locations 27782 3174 8.752993
Recruitment Status 6330 3055 2.072013
Study Design 5738 2576 2.227485
Eligibility 5303 2107 2.516849
Arms 5054 2056 2.458171
Interventions 5054 2056 2.458171
Study Description 4407 1741 2.531304
Study Identification 4125 1908 2.161950
Outcome Measures 3935 1957 2.010731
None (earliest Version on record) 3658 3658 1.000000
Conditions 3261 1373 2.375091
Sponsor/Collaborators 2929 1659 1.765521
Oversight 2560 1728 1.481481
References 1226 741 1.654521
More Information 602 226 2.663717
IPDSharing 488 407 1.199017
Results 376 376 1.000000
Results Submission Events 140 140 1.000000
Baseline Characteristics 116 97 1.195876
Documents 106 103 1.029126
Participant Flow 89 73 1.219178
Reported Adverse Events 77 66 1.166667
2020 Outcome Measures 1 1 1.000000
Quality Control Review has not concludedReturned: February 15 1 1 1.000000

Enrollment Metrics by Phase

Measure Early.Phase.1 N.A Phase.1 Phase.1.Phase.2 Phase.2 Phase.2.Phase.3 Phase.3 Phase.4
Min. 1.0000 4.0000 1.00000 2.0000 1.0000 9.0000 12.0000 10.0000
1st Qu. 10.0000 30.0000 23.00000 37.0000 32.0000 54.7500 131.5000 48.2500
Median 20.0000 72.0000 37.00000 72.0000 53.0000 115.0000 280.0000 89.0000
Mean 236.4091 281.7533 59.07579 112.9942 111.9857 475.1316 517.5723 343.8654
3rd Qu. 43.7500 201.0000 65.00000 144.0000 100.0000 248.2500 555.0000 260.5000
Max. 8800.0000 15431.0000 1758.00000 1131.0000 6452.0000 10838.0000 7466.0000 8000.0000

Trial Group Type

group_type Group_Count
Experimental 5434
Active Comparator 458
NA 381
Other 182
No Intervention 116
Placebo Comparator 97
Sham Comparator 17

Intervention Model

intervention_model Study_Count
Single Group Assignment 2166
Parallel Assignment 1024
Sequential Assignment 209
NA 182
Crossover Assignment 64
Factorial Assignment 13

Primary Purpose

primary_purpose Study_Count
Treatment 2980
Supportive Care 238
Diagnostic 131
Prevention 91
Other 80
NA 45
Health Services Research 31
Basic Science 29
Screening 26
Device Feasibility 7

Observational Studies

Studies by Country

Country Study_Count
United States 214
France 38
China 34
NA 23
Italy 18
Canada 13
Korea, Republic of 9
Netherlands 9
United Kingdom 9
United States|Canada 9
Egypt 8
Taiwan 8
Norway 7
Belgium 6
Denmark 6
Spain 6
Germany 5
Hong Kong 4
Poland 4
Sweden 4
Brazil 3
Finland 3
Switzerland 3
Czech Republic 2
India 2
Singapore 2
Turkey 2
United States|Australia|Canada|New Zealand|Puerto Rico|Switzerland 2
Argentina|Austria|Czechia|Denmark|France|Italy|Luxembourg|Mexico|Netherlands|Singapore|Spain|Switzerland|Taiwan 1
Argentina|Brazil|Mexico 1
Australia|Canada|Czech Republic|Italy|Netherlands 1
Austria 1
Austria|Belgium|Germany 1
Austria|Belgium|Germany|Italy 1
Austria|Croatia 1
Austria|Germany 1
Belgium|Germany 1
Cambodia 1
Canada|Denmark|United Kingdom 1
Croatia 1
Czechia|Germany|Israel|Italy|Spain|United Kingdom 1
Denmark|Sweden 1
France|Germany|Netherlands 1
Germany|Greece|Italy 1
Germany|Italy 1
Germany|Serbia|United Kingdom 1
Hungary 1
Ireland 1
Israel 1
Italy|Romania|Russian Federation|Serbia|Spain|Turkey 1
Italy|Spain|Sweden 1
Italy|United States|Greece|Israel|Netherlands|Norway|Poland|Portugal|Spain|United Kingdom 1
Japan 1
Pakistan 1
Romania 1
United States|Australia|Canada 1
United States|Australia|Canada|New Zealand|Puerto Rico 1
United States|Australia|Canada|New Zealand|Puerto Rico|Saudi Arabia 1
United States|Australia|Canada|Puerto Rico|Switzerland 1
United States|Austria|Belgium|France|Japan|Poland 1
United States|Canada|France|Germany|Italy|Spain|United Kingdom 1
United States|Canada|Hungary 1
United States|Canada|Nigeria 1
United States|Canada|Puerto Rico|Switzerland 1
United States|Canada|Spain|United Kingdom 1
United States|China|India|Japan|Netherlands|Sweden 1
United States|Colombia|Mexico|Peru|Puerto Rico 1
United States|Denmark|France|Germany|Italy|Spain|United Kingdom 1
United States|Denmark|India|Portugal|South Africa 1
United States|Finland|Iceland|Sweden 1
United States|France|Germany|New Zealand|Switzerland|United Kingdom 1
United States|Puerto Rico 1
United States|Taiwan 1

Sites per Study

Site_count Study_Count
1 338
2 31
3 19
4 13
5 7
6 9
7 6
8 7
9 1
10 6
11 3
12 1
13 3
14 2
15 4
16 1
17 2
18 1
19 3
20 2
21 1
22 1
23 2
25 1
26 2
27 1
28 2
29 1
30 1
31 1
33 1
42 2
46 1
48 1
53 1
55 1
61 1
66 1
70 1
72 1
81 1
111 1
138 1
144 1
156 1
184 1
185 1
187 2
192 1
228 1
272 1
280 1
381 1
523 1

Number of Updates

Count of Versions Count of Studies
1 69
2 80
3 64
4 45
5 29
6 26
7 26
8 19
9 18
10 16
11 14
12 4
13 4
14 7
15 8
16 4
17 3
18 3
20 6
21 1
23 2
25 1
27 2
28 2
29 1
31 1
34 1
40 2
41 1
44 1
46 1
47 1
48 1
49 1
50 1
60 1
61 1
64 3
65 1
66 1
73 1
75 2
76 1
83 1
86 1
94 2
98 1
101 1
108 1
113 1
116 1
122 2
138 2
146 1
165 1
185 1
202 1
214 1
224 1
232 1
253 1
404 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 6701 429 15.620047
Contacts/Locations 3052 332 9.192771
Study Description 815 167 4.880240
Study Design 573 291 1.969072
None (earliest Version on record) 498 498 1.000000
Recruitment Status 473 290 1.631034
Eligibility 459 198 2.318182
Study Identification 264 157 1.681529
Outcome Measures 254 157 1.617834
Sponsor/Collaborators 254 170 1.494118
Conditions 230 117 1.965812
Groups 224 144 1.555556
Interventions 224 144 1.555556
Oversight 168 132 1.272727
References 132 78 1.692308
IPDSharing 35 34 1.029412
More Information 9 3 3.000000
Results 7 7 1.000000
Baseline Characteristics 3 2 1.500000
Documents 3 3 1.000000
Participant Flow 2 2 1.000000
Reported Adverse Events 2 2 1.000000
Results Submission Events 2 2 1.000000

Enrollment Metrics

Measure Observational
Min 1.000
1st Qu 80.000
Median 204.000
Mean 9650.658
3rd Qu 849.000
Max 1600000.000

Observation Model

observational_model Study_Count
Cohort 258
Case-Only 106
Case-Control 47
Other 33
NA 32
Case Control 10
Family-Based 6
Ecologic or Community 3
Case-Crossover 2
Case Control, Natural History 1

Time Perspective

time_perspective Study_Count
Prospective 341
Retrospective 76
Cross-Sectional 29
NA 28
Other 24

Registries

Studies by Country

Country Study_Count
United States 17
China 5
France 5
Germany 3
Spain 3
Brazil 2
Korea, Republic of 2
Thailand 2
United Kingdom 2
Austria 1
Belgium 1
Canada 1
Colombia 1
Denmark 1
Greece 1
Israel 1
Italy 1
NA 1
Netherlands 1
Norway 1
Saudi Arabia 1
Taiwan 1
Turkey 1
United States|Australia 1
United States|Canada|Germany|Israel 1

Sites per Study

Site_count Study_Count
1 39
2 3
3 3
4 2
5 1
7 1
10 1
11 1
15 1
16 1
17 1
21 1
37 1
75 1

Number of Updates

Count of Versions Count of Studies
1 11
2 12
3 11
4 6
5 5
6 4
7 2
8 1
12 1
13 1
16 1
20 1
26 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 193 46 4.195652
Contacts/Locations 75 36 2.083333
None (earliest Version on record) 57 57 1.000000
Study Design 41 25 1.640000
Recruitment Status 32 25 1.280000
Outcome Measures 26 15 1.733333
Study Identification 26 13 2.000000
Eligibility 24 15 1.600000
Study Description 24 16 1.500000
Conditions 22 10 2.200000
Sponsor/Collaborators 18 9 2.000000
References 13 6 2.166667
Groups 12 8 1.500000
Interventions 12 8 1.500000
Oversight 10 9 1.111111
IPDSharing 9 6 1.500000

Enrollment Metrics

Measure Registries
Min 20.00
1st Qu 171.00
Median 500.00
Mean 20509.84
3rd Qu 4000.00
Max 999999.00

Registry Model

observational_model Study_Count
Cohort 38
Case-Only 8
Other 8
Case Control 2
NA 1

Time Perspective

time_perspective Study_Count
Prospective 46
Other 7
Cross-Sectional 4

Follow-up

target_duration Study_Count
1 Year 11
10 Years 7
5 Years 7
2 Years 6
12 Months 5
1 Day 3
24 Months 2
3 Years 2
4 Years 2
6 Months 2
1 Month 1
1 Week 1
100 Years 1
20 Years 1
30 Years 1
48 Months 1
60 Months 1
7 Days 1
80 Years 1
99 Years 1